Integra DTR-7.6 Service Manual page 125

FW UPGRADE
DSP/Video FW Upgrade
0. Unzip "firmware.zip" and store the unzipped folder
& files and "Update.exe" as below.
\Updater_SR803\Update.exe
\firmware\SR803\fdist.fdf
\FW803.dcf
\DSP7803_05Y28A.s28
\05X04B_video803.hex
You can name the uppermost folder "\Updater_SR803" as you like.
1. Hold down "Display" and then press "Standby" button
to show Main version.
2. Press "Setup" within 3 seconds.
3. Press "Enter" while DSP version is shown to enter Setup mode.
"DSP F/W Update" will be shown.
4. Connect your unit and PC with Flashwriter Jig and put the unit
into Standby mode.
5. Double-click "Update.exe".
PC
(Personal computer)
0JFLASH
RS232C
If you get the message like below, FW files are not properly stored.
Check the path.
Flashwriter Jig
0JFLASHEX
FFC
P702
NAAR-8661
6. Click "DSP Updade" or "Video Update".
DSP
Video
7. Update completes when Front Display stops showing the progress.
Note: Even if you try to check the DSP version, you might not be able
to get is due to the wrong combination of DSP and Main.
In this case, check the version after upgrading Main FW.
Main FW Upgrade
Write the latest main program using FlashSta.exe.
DTR-7.6